1021425242 has 8 divisors (see below), whose sum is σ = 1532694036. Its totient is φ = 510527232.

The previous prime is 1021425227. The next prime is 1021425257. The reversal of 1021425242 is 2425241201.

It is an interprime number because it is at equal distance from previous prime (1021425227) and next prime (1021425257).

It can be written as a sum of positive squares in 2 ways, for example, as 974625961 + 46799281 = 31219^2 + 6841^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85703 + ... + 96890.

Almost surely, 2^1021425242 is an apocalyptic number.

1021425242 is a deficient number, since it is larger than the sum of its proper divisors (511268794).

1021425242 is a wasteful number, since it uses less digits than its factorization.

1021425242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185392.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 1021425242 is about 31959.7440853333. The cubic root of 1021425242 is about 1007.0913413436.

Adding to 1021425242 its reverse (2425241201), we get a palindrome (3446666443).

The spelling of 1021425242 in words is "one billion, twenty-one million, four hundred twenty-five thousand, two hundred forty-two".